Improve linking multiple diff lines UX
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=17643) </details> <!--IssueSummary end--> Creating a link to a diff that highlights multiple lines is super cool. I feel its a bit hidden, currently there is no UI to support this feature, you just select a line and then `SHIFT` select another line to create the range of the selection and it will update your address bar accordingly. ![2017-03-30_16.59.29](/uploads/4e94453e62018d295b1fbd1642450f59/2017-03-30_16.59.29.gif) We should find a way to make this feature more obvious or easier to use with actual UI components.
issue